Question

**The manufacturer of a new antidepressant claims that,
among all people with depression who use the drug, the proportion p
of people who find relief from depression is at least 80%. A random
sample of 205 patients who use this new drug is selected, and 160
of them find relief from depression. Based on these data, can we
reject the manufacturer's claim at the 0.05 level of significance?
Perform a one-tailed test. Then fill in the table below. Carry your
intermediate computations to at least three decimal places and
round your answers as specified in the table. (If necessary,
consult a list of formulas.)**

The null hypothesis: |
H0: |
|||

The alternative hypothesis: |
H1: |
|||

The type of test statistic: | (Choose one)ZtChi squareF | |||

The value of the
test statistic: (Round to at least three decimal places.) |
||||

The critical value
at the
0.05 level of significance:(Round to at least three decimal places.) |
||||

Can we reject the
claim that the proportion of people who find relief from depression
using the new antidepressant is at least
80% ? |
Yes | No |

Answer #1

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INCLUDE DEGREE OF FREEDOM IF ANYTHING OTHER THAN Z.
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